Genuine silk embroidery ribbon 10m x 166 colors Width: Approximately 4mm All colors have different color numbers. I don't think there are any ribbon embroidery threads available today that have such a detailed range of colors and tones. This is the last time this will be offered with 166 colors. This is inventory I received when a craft store closed. The packaging shows signs of deterioration such as fading, but the ribbon is unused. #embroideryribbon #silklribbon